It is exactly ______he often fails in the exam______ makes his parents worried about him

Do you go there ＿＿＿bus? —— No, we go there ＿＿＿a train

Have you brought withyou We won’t have time to come back.—Don’t worry. All the things we need arehere, in this big bag.

In Scandinavian countries it is common ____ for thehusband to stay at home to look after the baby

下列各句中，没有语病的一句是（ ）